Don't forget that R8 will have used up to at least 3HP. R8 has basically the same taper angle as a 30-taper, and of course it also has the same maximum taper diameter and it is with a much SHORTER taper length with no keys or other similar methods. There is however no reason in the whole world where the keys should be needed in 30-taper below at least 2-3HP.

He/she will be using a 3 hp motor with spindle speeds of up to 10,000rpm. I have had tool pull with Tormach so now am looking at the bt30 spindles. But atc is that little bit more difficult than a tts setup